HWPeeler (HPeeler)

hobby electronics

Hosted by HWPeeler (HPeeler)

A forum for people who enjoy electronics as a hobby.

  • 117
    MEMBERS
  • 264
    MESSAGES
  • 0
    POSTS TODAY

Discussions

The flexible Snap Circuits   Discussions

Started 3/11/18 by HWPeeler (HPeeler); 276 views.
HWPeeler (HPeeler)

From: HWPeeler (HPeeler)

3/11/18

The early exercises are made for new learners but they do not limit the capability to just blinking lights and cool sounds. There are also blank snap in modules so you can make components of your choosing. They also have a set of snap on wires with pin leads on them that just happen to fit breadboards. At preset (March 2018) they do not offer a breadboard or a socket greater than an 8-pin IC, but it is apparent they are growing in the direction of greater ICs.

Among their many distributors is C&S Sales. You can find their Snap Circuits products there.

http://cs-sales.net/

In reply toRe: msg 1
HWPeeler (HPeeler)

From: HWPeeler (HPeeler)

Apr-6

Some suggested circuits:

A1302KUA Ratiometric Hall Effect device

Darlington NPN

CD4013 They have gates but no flip flops

CD4027

Op Amps in general

LM555

Darlington PNP

Power supply, 9 V DC, even a battery

Power Supply, 12 V DC

Power supply, AC

Power supply + and – V DC, 9 V batteries would be good

Variable power supply

Variable voltage sources, two, +V to -V

Variable voltage sources, two, DC

Clean switches

Digital switches

LED outputs

Monostable multivibrators

Exercise

A1302 exercise needs

            Regulated 5.0 V

            A1302

            DMM

            Excel file to calculate gauss

Diode exercise

            Variable DC voltage source

            Current limiting resistor

            DMM

LED exercise

            Variable DC voltage source

            Current limiting resistor

            DMM

Transistor rxercise

            Variable DC voltage source

            Fixed voltage source

           Current limiting resistors

            DMM

Voltage comparator exercised

            Two variable DC voltage sources

            Current limiting resistor

            DMM

            LM393, LM339

            LM311, LM319

            LMC6772

Op Amp exercise

            Variable DC voltage source

            Current limiting resistor

            DMM

            Single band dual power supplies

            LM741

            RRIO, single supply

            RRIO, dual supply

           

CD4013 exercisde

            Power supply

            3 SPST switches

            1 clean switch

            2 LED

CD4027 exercise

            Power supply

            4 SPST switches

            1 clean switch

            2 LED

7-segment decoder and display exercise

            4 spst switches, bcd

            2 blanking in

            LED for blanking out

Dual 7-segment decoder and display

            8 spst switches, bcd

            2 blanking in

            Blanking out demonstrated

BCD counter

            7-segment decoder and display

AC in to 1 PPS

CD4566

Adder

ALU

4016

Counters, 4020, 4060

4099 addressable latch

4532 priority encoder

Counters

            ripple

            synchronous

            BCD

            Binary

            Programmable

            Up counters and down counters

Rate multipliers

Memory devices

            RAM

                        Static

                        Dynamic

            ROM

                        Masked ROM

            `           PROM

                        EPROM

                        EEPROM

                        Flash

Shift register

PLL

Parity tree

Wallace tree

In reply toRe: msg 2
HWPeeler (HPeeler)

From: HWPeeler (HPeeler)

Apr-6

The A1302 exercise. Ratiometric Hall Effect device. It puts out an analog voltage proportional to the magnetic field it is exposed to. With no magnetic field the output is half that of applied VCC. (The definition of Ratiometric.)  Voltage increases about 1.3 mV per gauss on exposure to a South (+B) magnetic field. Voltage decreases on a North magnetic field.

A1302KUA in the leaded, TO-92 kind of package, was used. It was soldered into the 3 snap blank package. The AC Snap power adapter puts out a suitable 5 Volts. Actually about 5.3 V, but that works.

No more circuits are needed. We discover that the magnet that comes with the Elenco Snap Circuits has a strength of about 750 Gauss.

The A1302 can measure almost 2,000 Gauss.

In reply toRe: msg 2
HWPeeler (HPeeler)

From: HWPeeler (HPeeler)

Apr-6

I am told they had a breadboard once upon a time. They still carry a set of 10 Snap to pin wires. Buy two sets. We will use them.

They already have some basic CMOS gates but no flip flops or other circuits. Only one gate is available on the Snap Circuits. A breadboard would allow more.

The AC Snap power supply puts out a suitable 5 Volts for CMOS or TTL exercises.

A medium to large size breadboard would allow multiple IC circuits.  Counter and display exercises would be good.

Flip flop exercises would require a clean, deglitched, pulse generator circuit for clock pulses.

In reply toRe: msg 4
HWPeeler (HPeeler)

From: HWPeeler (HPeeler)

Apr-6

Some suggested support circuits for CMOS digital exercises.

In reply toRe: msg 5
HWPeeler (HPeeler)

From: HWPeeler (HPeeler)

Apr-6

Clean pulses are needed for clock pulses. Switched bounce creating multiple pulses.

TOP